The Surface Book is arguably the best 2-in-1 on the market. Especially now that Microsoft has released an updated model with a Performance Base. The company can also sell the device as a true alternative to Apple’s various laptops. Indeed, Microsoft has been pushing this line with a recent trade-in promotion.

Since launching the new Surface Book, Microsoft has been running a trade-in program for MacBook owners. The offer lets users put in their MacBook in exchange for a Surface Book at a reduced price through the Microsoft Store.

The company has now decided to extend the program, which suggests it has been a success. The original trade-in program was scheduled to end November 7. However, Microsoft now says it will run until November 23, 2016, 11:59 PM PST. The offer will be open as long as stock lasts.

Details

Microsoft has not changed up the trade-in, so customers can still get $650 for an eligible MacBook, MacBook Pro, or MacBook Air. The other qualifications are:

Must be fully functional

Battery must hold charge and not be required to be plugged in to operate

Must not have any damaged, broken, or missing components

Cannot have been modified and warranty seal must be intact

Cannot be password protected

Must come with original chargers and accessories

Surface Book

Microsoft’s hybrid device is symbolic of a push from the Windows platform to address Apple’s design dominance. Windows devices have always been capable of out-spec’ing Mac PCs, but often could not match Apple’s design ethos. The Surface Book helped to change that perception, offering innovative and high-end design with top of the line specs.

Yesterday we revealed that Microsoft will not sell the Performance Base separately from the Surface Book. As the Surface Book is a detachable device, the screen could essentially work on any Performance Base. This would make the device configurable in a way, allowing users to keep the screen but upgrade the Performance Base.

Luke has been writing about all things tech for more than five years. He is following Microsoft closely to bring you the latest news about Windows, Office, Azure, Skype, HoloLens and all the rest of their products.